Pornography in Japan is large and intertwined business of adult entertainment with unique characteristics that readily distinguish it from western pornography. A few extremely flexible males can reach and stimulate their penis with their tongue or lips, and so perform autofellatio. Specific sex acts Anal Anal pornography features anal penetration horny milfs with a penis, dildo, other objects, or some combination of them. Arcane or occult pornography involves sexualized situations with an occult or magical tone or performers who costume themselves in keeping with the theme, for example, a male performer dressed as a wizard. Snowballing or snowdropping is the human sexual practice in which one person takes someone else semen into his or her mouth and then passes it to the mouth of the other, usually through kissing. The first explicit pegging scene is believed to have been in the 1975 pornographic film The Opening of Misty Beethoven. The niche popularity grew significantly in the lesbian hentai latter half of the first decade of the 2000s. A pornographic work is characterized as hardcore if it has any hardcore hot gay sex content, no matter how small. Commercialized pornography accounts for a nearly US0 billion worldwide industry for the production of various media and associated products and services. It is used, for example, at fertility clinics to stimulate sperm donors. A sex party is a gathering at which sexual activity takes place. Cuckolding can also be mixed with other non-monogamous relationship arrangements with which it has substantial overlap such as Swinging, wife-swapping, open relationships, and polyamory, etc. Double Stuffed , Double Vaginal , or Double Anal pornography involves the penetration of one orifice by two penises or other objects. Bondage pornography specializes in the depiction of sexual bondage or BDSM activities as photographs, stories, movies, or drawings. Some may keep their hand stationary while pumping into it with pelvic thrusts in order to simulate the motions of sexual intercourse.